^ I've been posting along similar lines for as long as I've been a G&GR'r so I'm pleased that someone else has noticed the impending PI player availability crisis (let's face it, Samoa or Tonga minus their heritage players would struggle in many Club comps e.g. Auckland, Sydney & Brisbane).
One thing I'm less familiar with is whether culturally, it is popular for PI people to marry someone from back home.
There's also of course the prospect that in 50 years time when this might start becoming a real issue, the asteroid will have already come for us